There's a reason Carrie Mathison (
Claire Danes) turned so quickly -- if only for a moment -- on Brody (
Damian Lewis) in
Homeland's explosive Season 2 finale: She was the first to suspect he was a traitor.

The "Homeland" producers revisit those early days in an interview exclusive to
Zap2it. Responding to fan questions,
Alex Gansa,
Howard Gordon and
Chip Johannsen describe one of their most difficult scenes to film and write : Brody's intimate reunion with his wife, Jessica (
Morena Baccarin). And Carrie is watching their awkward encounter via illegal video surveillance.

Check out the video -- and if you haven't seen "Homeland" yet (!), it's time to find out what you've been missing.